Tyre for a vehicle wheel having an antiabrasive band
AssigneePirelli Pneumatici S.p.A.
InventorsAntonio Serra, Marco Nahmias Nanni
Life of this patent
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Abstract
Motor vehicle tire (100) which has reduced rolling resistance (FIG. 1), the said tire comprising at least one carcass ply (101) whose opposite lateral edges are folded externally to form carcass folds (101a) around respective right and left bead wires (102), each bead wire being encased in a respective bead (103), each bead also comprising a respective bead filling (104) and antiabrasive band (105), in which the said antiabrasive band (105) consists of a vulcanized elastomeric compound comprising at least one natural or synthetic rubber and has a loss factor (tan δ=E″/E′) at 70° C.≦0.130 and a storage modulus E′ at 70° C.≧6 MPa.
Claims24
Motor vehicle tire (100) which has reduced rolling resistance, the said tire (100) comprising at least one carcass ply (101) whose opposite lateral edges are folded externally to form carcass folds (101a) around respective right and left bead wires (102), each bead wire being encased in a respective bead (103), each bead also comprising a respective bead filling (104) and antiabrasive band (105), the said antiabrasive band (105) consisting of a vulcanized elastomeric compound comprising at least one natural or synthetic rubber, characterized in that the said compound has a loss factor (tan δ=E″/E′) at 70° C.≦0.130 and a storage modulus E′ at 70° C.>6 MPa.
Antiabrasive band (105) for a tire (100) which has low rolling resistance, the said band (105) consisting of a vulcanized elastomeric compound comprising at least one natural or synthetic rubber, characterized in that the said compound has a loss factor (tan δ=E″/E′) at 70° C.≦0.130 and a storage modulus E′ at 70° C.>6 MPa.
Dependencies are inferred from the claim text.